There are two DVI-I jacks on the slot cover. This means that you have the choice of hooking up two analog displays or two flatscreen displays with digital input. Combinations of analog and digital are also possible.

The FireGL X1 with 128 MB features an additional power supply. The jacks have the same form factor as a floppy drive, which explains why plugs on standard power units also fit. The 256 MB model is equipped with an AGP Pro50 interface.

The physical memory speed is 310 MHz, but because of the DDR memory used, marketing likes to talk about "620 MHz."